Trimming attachment for looping-mach in es



(No Model.) y sheets-sheet 1. N. H. BRUCE. TRIMMING ATTACHMENT PORLCOPING MACHINES.

No. 408,575. Y Patented Aug. 6, 1889,.

2 Sheets-Sheet 2.

(No Model.)

N. H. BRUCE. TRIMMING ATTACHMENT FOB. LOOPING MAGHNBS.

No. 408,575. Patented Aug. 6,-1889.

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, l W a/)n l 7 M t d UNITED STATES PATENT OFFICE.

NORMAN I-I. BRUCE, OF NVATERFORD, NEIV YORK.

TRIM'MING ATTACHMENT FOR LOOPING-MACHIES.

SPECIFICATION forming part Of Letters Patent NO. 408,575, dated August6, 1889. Application filed lSeptember 25, 1888. Serial No. 286,370. (Nomodel.)

To all whom it may concern.-

Be it known that I, NORMAN H. BRUCE, a

citizen ofthe United States, residing at,

Waterford, in the county'of Saratoga and State of New York, haveinvented new and useful Improvements in 'Trimming Attachments forLoopers, of which the following is a specification.

My present invention relates to trimmers and brusher attachments forcylinder turning-off machines of the type shown in the applicationsfiled by me and the patent heretofiore' granted to me, all ashereinafter speci- In my application filed March 1, 1888, Serialblo-265,821, I showa mechanically-driven rotary brush combined with aturning-off machine, together with means for imparting a vibratory orreciprocating movement to said brush in` conjunction with its rotarymovement. I also provide devices for adjusting the brush relatively tothe points of the turning-off ring. In the Letters Patent granted meOctober 3,1888, No. 392,005, I

show an automatic vtrimming and brushing attachment for turning-offmachines, whereby the impaled fabrics are cut or trimmed and their edgescleansed by automatic devices. In the applicationtiled by'me upon theSth day of June,1888, Serial No. 27 6,476, I show and describe acuttingor trimming and brushing attachment for turning-'off machines, whereinthe fabrics are guided to the single cutter and trimmed by meanssubstantially similar 'to those employed in the present application.

Vith these trimming devices are combined a rotary brush and meansforgiving vertical and lateral adjustment to said devices and a guidefor the edges of the fabrics. With these devices I also combine areciprocating brush eo-operating with the rotary brush and interposedbetween the same and the trimmer. I also show means for operating therotary brush in two different directions relatively to the points of theturning-off machine.

I make no claim, therefore, in the present application to any feature orfeatures shown in the said patent and applications for patents specifiedabove.

It is the purpose of my invention to simplify and improve theconstruction and operation of the parts constituting the trimming andbrushing mechanism, whereby the whole shall be driven by a single beltgearing with the counter-shaft of the attachment and with thebrush-shaft. vIt is my purpose,

also, to provide simple'm'anism for giving rotary reciprocation to Jthecutter from a crank-pin on the brush-shaft, thereby simplifying themachine and diminishing its bulk.

It is a further o bject of my invention to improve and simplify themeans whereby horizontal adjustment is given to the cutter and brushjointly and an independent horizontal andvertical adjustment to thebrushshaft.

It is one purpose of my invention, also, to so construct and operate therotary cutter that the trimming shall be eiiected by reciprocating thecutter or trimming disk through a fractional part of an entirerevolution, whereby, through simple adjustments, successive portions ofthe cutting-edge of said disk or trimmer may be used one after another,thereby greatly prolonging the term of effective use, cheapening thecost, and diminishing the labor of operating the machine.

The invention consists in the several novel features of construction andnew combinations of parts hereinafter fully described, and thendefinitely pointed out in the claims.

In the accompanying drawings, Figure l is a side elevation of part of aturning-off cylinder, showing my invention in connection therewith. Fig.2 is a plan view of the parts show-n in Fig. l. Fig. 3 is a verticalsection in the axial line of the countershaft of the trimming andbrushing attachment. Fig. 4 is a detail side elevation of the rear endof the arm of the attachment. Fig. 5 is a detail perspective of theadjustable arm carrying the brush-shaft. Fig. 6 is a detail view of thebell-crank lever, by which motion is communicated from the brush-shaftto the trimmer. Fig. 7 is a detail view, enlarged, of t-he iiexible andelastic pitman or connecting-rod between the bell-crank and the shaftofthe rotary cutter. Fig. 8 is a view of the disk on the cutter-shaft,showing the construction for securing an interchangeable point ofconnection for the pitman. Fig. 9 is a detail view of the ordinarysolidy pitman, reciprocating the cutter-shaft.

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The reference-numeral 1 in said drawings denotes the bed-plate of aturning-off machine of ordinary construction, having a cylinder 2,provided with a fringe of points 3, upon which the fabrics are impaledin the usual manner. As this portion of the mechanism shown forms nopart of my present invention and is Well known to those skilled in theart, no full illustration thereof has been given, nor is any descriptionessential. I have merely shown, therefore, a fractional part of theturning-oit ring, in order to setforth fully the relation of myinvention thereto.

Mounted upon any suitable support 4 conveniently near the turning-omachine is a plate 5, from which rises a standard 6, carrying twoparallel arms, which constitute a fork 7. In the ends of these arms isrigidly mounted a cylindrical bearing 8. Rising from the standard'iis ahorn or inclined arm 9, the use of which will be explained hereinafter.

Mounted upon the bearing 8 isa short sleeve 10, split upon 011e side,showing projecting lugs 12, through which is tapped a set-screw 13,whereby the sleeve may be caused to grip the bearing 8 more or lessclosely. Cast with or attached to this sleeve 10 is a tubular bearing14, having its axis at right angles with the axis of the sleeve 10.\Vithin the tubular bearing 14 is inserted the cylindrical end of an arm15, upon which all the operative parts composing the attachment aresupported. This arm is held at any desired point of longitudinal andaxial adjustment by means of a set-screw 16, tapped through the tubularbearing 14. The arm 15 is provided not far from its middle portion withan upwardly-curved yoke or arm 15, and in that part of said arm betweenthe yoke and its cylindrical extremity is formed a slot 17, extendingthrough the arm. Vit-hin this slot and adjustable therein lies a stud orbolt 18, which passes through and gives bearing to the extremity of anarm 19, Fig. 5, having an opening 2O to admit the stud, which receives anut 21 upon its threaded projecting end, by which the arm may be lockedat any point to which it is adjusted.

Upon the free end of the arm 19 is formed a boss 22, which gives bearingto a shaft 23, having a fixed pulley 24. Below the shaftbearing or uponany convenient part of the arm is formed a pin 25, which gives aconvenient attachment to a spring 26, the other end of which isconnected under tension to the yoke or arm l5 to raise the free end ofthe arm 19.

Upon the brush-shaft 23 is keyed or otherwise mounted the rotary brush27, which is of the construction fully shown in my prior application andrequires no specific description. This brush is revolved through thepulley 24, which is belted to a pulley 28 on the bearing 8, said pulleybeing driven by a second pulley 29 rigid therewith. A loose pulley 30may be provided for the belt when the operation of the machine is to bechecked. Tapped through a bearing 31 on the yoke or arm 15 is aset-screw 32, the end of which rests upon the boss 22. By adjusting thisset-screw a very exact and delicate vertical adjustment may be easilyand instantaneously given to the brush, which is automatically liftedwhen ever the set-screw is retracted by means of the spring 26.

A protecting cap o1' hood 33 may be hinged to a support 34 on the arm19.

Upon the forward portion of the arm 15 is attached a fulcrum or bearing35, upon which is mounted a bell-crank or elbow lever 36, having in onearm a slot 37, which receives a crank-pin 38 on the end of thebrush-shaft 23. Upon the end of the other or upright arm of thebell-crank isattached a pitman or connecting-rod 39, connected by itsother end to a disk 40, rigidly mounted on a vertical rockshaft 41,which carries the cutter 42. This disk is provided at regular intervalswith openings 43, Fig. 8, which receive a wrist-pin 44, and to this pinis connected one end of the pitman 39, the other end of which isconnected to the vertical arm of the bell-crank or elbow lever 36.

The vertical rock-shaft 41 is journaled in a bearing 46, having abracket 47, provided with a circular opening which receives a stud 48,rising at right angles from a cylindrical arln 49. This arm has bearingin a boss 50 on the forward end of the arm 15, and a set-screw 51,tapped through it and bearing upon the said arm, locks it in anyposition to which it has been adjusted. A second set screw 52 is tappedthrough the bracket 47 and bears against the vertical stud 48 to permitthe bearing of the cutter-shaft to swing horizontally, or substantiallyso, and to lock said bearing at the proper point.

Through the forward extremity of the arm 15 is tapped a set-screw 53,the end of which is adapted to rest upon the turning-off bedplate. Thearm is cleft or split at its end, and a compressing-screw 54 is passedthrough one end and tapped into the other of the cleft sections toenable the operator to bind the supporting-screw at any point ofadjustment.

Cast or otherwise attached to the bearing 46 is a forwardly-projectingbracket'55, upon which are mounted plates 56, one or both of which areelastic. These plates carry guides 57, having edges 58, which are curvedto form an open mouth, narrowing to a passage 59, beneath the rearwardend of which the cutter reciprocates. A guide-plate 60 is mounted on oneof the guides to support the free edges of the impaled fabrics; but asthese parts do not materially differ from the invention shown anddescribed in my application filed June 8, 1888, Serial No. 276,476, theyrequire no further description here.

A spring 60, attached to a bracket-hook 61 on the arm 15, is connectedto the table or lOO IIO

l. other support l, and serves to hold the arm\ down While the mechanismis in operation.V

Vhen the attachment is not used, or even when it is necessary to haveaccess to the cutter or other adjacent parts, the arm 15 and itsconnections .may be lifted, turning upon the bearing 3 until the armrests upon the arm or horn 9, Which furnishes a convenient supporttherefor.

When ythe cutter becomes ydulled by continued use, the pitman 45 Aisdisconnected from the Wrist-pin 44 and the latter is shifted to oneofthe adjacent openings 43 in the disk disk 40 as provided with sevenequidistant openings 43 5 but it is evident that a greater or lessnumber may be used, as circumstances may require.

Inasmuch as the repeated shifting of the position of the brush-shaft bywhich the cutter is driven is liable to throw some strain upon thepitman 45, I propose to substitute for therigid pitman shown in Fig. 9and usually employed heretofore the flexible and elastic pitman shown onan enlarged scale in Fig. 7. It consists of a strong closely-Woundspiral of spring-Wire 62, into the ends of which are introduced thethreaded Shanks 63 of the attaching-heads 64. This construction not onlypermits the pitman to yield readily to strain in any lateral direction,but also allows it to be adjusted in length by turning the shanks 63 inor out. This flexible and elastic pitman also accommodates itself to thedisk 40, the Wrist-pin on Which moves in the arc of a circle and therebyimposes some lateral strain on the pitman.

In use the invention is applied to its support in the usual manner, Theset-screw 16 is then loosened and t-he arm 15 is adjusted longitudinallyand axially until the cutter and guides are brought to the proper point,whereupon the screw is again tightened. Further adjustment of the cutterand guides may be made, if required, by means of the vertical stud 48,on Which the entire cutter-head may be turned, While a furtheradjustment is possible by the axial movement of the arm 49. Whensatisfactorilyadjusted and the cutter set at the proper heightrelatively to the turning-off ring by means of the set-screw 53, thebrush is independently adj usted by loosening the nut 2l and setting thestud or bolt 18 at the proper point in the slot 17 of the arm 15.v

The height of the brush is then regulated by means of the set-screw 32,by which, also, the

brush is adjusted from time to time as itv `the cutter. The revolutionof the pulley 2S by the belt-connection revolves the brushshaft 23 andits crank-pin, Which, Working in ried under the revolving brush, thelatter brushes off the severed parts.

The arm 9, formed or mounted on the bracket 6, serves as a convenientrest or support for the swinging arm of the attachment When'the latteris raised and turned into an inclined position, the tubular bearing 14turning for this purpose on the shaft S.

What I claim is-' 1. A cutting and brushingattachment for the cylinderof a turning-ff machine, consisting of a supported arm having abrushshaft bearing, a brush carrying shaft arranged in said bearing andhaving a crankpin, means for revolving the brush-shaft, acutter-carrying shaft having a Wrist-pin, and devices connecting theWrist-pin with the crank-pin of the brush-shaft for oscillating thecutter, substantially as described.

2. A cutting and brushing attachment for the cylinder of a turning-offmachine, consisting of a supported arm having a brushshaft bearing, abrush-carrying shaft arranged in said bearing and having a crankpin,means for revolving the brush-shaft, a pivoted bell-crank leverconnected With and oscillated by the crank-pin, a rock-shaft carrying acutter and a Wrist-pin, and a pitman connecting the latter With thebell-crank lever, substantially as described.

3. A cutting and brushing attachment for the cylinder of a turning-offmachine, consisting of a supported arm having a brushshaft bearing, abrush-carryingshaft journaled in said bearing, means for revolving thebrush-shaft, a pivotedbell-crank lever connected with and oscillated bythe crank-pin, a rock-shaft carrying a cutter and provided With aWrist-pin, and a flexible and elastic pitman connecting the Wrist-pinwith the bellcrank lever, substantially as described.

4. A cutting and brushing attachment for the cylinder of a turning-offmachine, consisting of a supported arm 15, an arm 19, pivoted to thelatter and provided with a'brushshaft bearing, a brush-carrying shaft23, journaled in said bearing and having a crankpin 33,aspring 2G, forraising the arm carrying the brush-shaft bearing, a set-screW32,

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for depressing said arm, means for revolving the brush-shaft, a verticalrock-shaft 41, carrying a cutter 42 and provided With a Wristsisting ofa supported arm 15, an arm l0, pivoted thereupon and having abrush-shaft bearing, a brush-carrying shaft 23, journaled in saidbearing and having a crank-pin 3S, a spring 2G, for raising the saidpivoted arm, a set-screw 32, for depressing the latter, means forrevolving the brush-shaft, a pivoted bellerank lever 3G, connected withand oseillated by the crank-pin of the brush-shaft, a roekshaft 41,carrying a cutter 42, and provided with a Wrist-pin 44, and a pitman 39,connecting the wrist-pin with the bell-crank lever, substantially asdescribed.

6. A cutting and brushing attachment for the cylinder of a turning-offmachine, oonsisting of a supported arm provided with a In testimonywhereof I afx my signature in presence of two witnesses.

NORMAN H. BRUCE. Vitilesses:

JAMES L. NoRRIs, JAMES A. RUTHERFORD.

